﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ExampleClass
{
    class CRectangle
    {
        int width;
        int height;
        public CRectangle(int a, int b)
        {
            width = a;
            height = b;
        }
        public int area()
        {
            return (width * height);
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
               CRectangle recta=new CRectangle(3,4);
            CRectangle rectb=new CRectangle(5,6);
            recta=rectb;
            Console.WriteLine("rect a:{0}",recta.area());
            Console.WriteLine("rect b:{0}",rectb.area());
        }
        
    }
}
